I am regular on my periods but this month i got 2 days late period. i am trying hard to get pregnent what is the reason for this delay if regular peri?

If >4 days late...: Pregnancy is the most common cause of a missed period. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… A visit to one’s Ob-Gyn doctor is a good idea if symptoms are recurring, or worrisome.